* Methods that accept path strings do not perform automatic validation to maintain backward compatibility.
 * </p>
 *
 * @author higa
 */
public abstract class FileUtil {

    /**
     * Do not instantiate.
     */
    protected FileUtil() {
    }

    /** The encoding name for UTF-8. */
    private static final String UTF8 = "UTF-8";

    /** Default Buffer Size */

import org.codelibs.core.lang.StringUtil;

/**
 * Utility class for assertions.
 *
 * @author shot
 */
public abstract class AssertionUtil {

    /**
     * Do not instantiate.
     */
    protected AssertionUtil() {
    }

    /**
     * Asserts that the argument is not <code>null</code>.
     *
     * @param argName

 * </tr>
 * </table>
 *
 * @author koichik
 * @see DateConversionUtil
 * @see TimestampConversionUtil
 */
public abstract class TimeConversionUtil {

    /**
     * Do not instantiate.
     */
    protected TimeConversionUtil() {
    }

    /** Array of styles held by {@link DateFormat} */
    protected static final int[] STYLES = new int[] { SHORT, MEDIUM, LONG, FULL };

    /**

 * </tr>
 * </table>
 *
 * @author shinsuke
 * @see DateConversionUtil
 * @see TimeConversionUtil
 */
public abstract class TimestampConversionUtil {

    /**
     * Do not instantiate.
     */
    protected TimestampConversionUtil() {
    }

    /** Array of styles held by {@link DateFormat} */
    protected static final int[] STYLES = new int[] { SHORT, MEDIUM, LONG, FULL };

    /**

 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

    assertIteratorsInOrder(expected.entries().iterator(), actual.iterator());
  }

  /**
   * Useless constructor for a class of static utility methods.
   *
   * @deprecated Do not instantiate this utility class.
   */
  @Deprecated
  public UnmodifiableCollectionTests() {}

 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

import java.util.StringTokenizer;

/**
 * Utility class for string operations.
 *
 * @author higa
 * @author shinsuke
 */
public abstract class StringUtil {

    /**
     * Do not instantiate.
     */
    protected StringUtil() {
    }

    /**
     * A system line separator.
     */
    public static final String RETURN_STRING = System.getProperty("line.separator");

    /**

 * </ul>
 *
 * @author koichik
 * @see URLUtil#toCanonicalProtocol(String)
 * @see ClassTraversalUtil
 * @see ResourceTraversalUtil
 */
public abstract class TraversalUtil {

    /**
     * Do not instantiate.
     */
    protected TraversalUtil() {
    }

    /** An empty array of {@link Traverser}. */
    protected static final Traverser[] EMPTY_ARRAY = new Traverser[0];

    } catch (Exception e) {
      throw new IllegalArgumentException(e);
    }
  }

  /**
   * Useless constructor for a class of static utility methods.
   *
   * @deprecated Do not instantiate this utility class.
   */
  @Deprecated
  public Helpers() {}